Logic Gates

Logic gates are physical components in a circuit that control the flow of a signal by implementing a Boolean function, processing a signal to binary information. Logic gates are foundational in logic circuits, or in any electronic circuit process that involves digital to analogue signal conversion, or the flow of digital information. Logic gates are primarily implemented using diodes or transistors as electrical switches, but can also be constructed using electromagnetic relays (relay logic), vacuum tubes, optics, molecules, fluidic logic, pneumatic logic, or even mechanical elements.

Types of Logic Gate

Logic gates have distinct logic functions. The most common of these are known as basic gates. These include:

  • AND Gates - these gates have multiple inputs that are processed into a single signal output depending on the positive combination of high signals in the inputs. It will only produce a high signal if both inputs register as high (e.g. two ones will result in a one, otherwise, it will have an output of zero).
  • OR Gates - similar to the AND gate, an OR gate has multiple inputs and a single output. In this case, it does not require a positive combination of one signals but will implement logical produce a high signal if one or all of the inputs are high. (e.g a one and a zero, or two ones, may produce a high signal, but two zeros will produce zeros.)
  • NOT Gates -also known as inverters, the NOT gates will process the signal as the opposite of its value (eg. a one will invert as a zero, and a zero will invert as a 1.)

There are also combined function logic gates that modify typical functions with an inversion.

  • NAND Gate - unlike an AND gate, NAND will process two high signals as a zero and all other combinations as a one.
  • NOR Gate - unlike an OR gate, this will produce a one if the inputs register a zero signal in any combination, rather than a high signal.
  • Buffer Gate - a buffer logic gate behaves in the opposite manner of a NOT gate, in that it passes a signal unchanged from input to output.

Applications

As CPUs employ binary logic, logic gates are essentially the building blocks of computers. As such, they can be found in many kinds of digital circuits such as:

  • Encoders & Decoders
  • Multiplexers & Demultiplexers
  • Full and half adders

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รายละเอียดสินค้า / Description ราคา / Price Logic Function Mounting Type Number of Elements Number of Inputs per Gate Schmitt Trigger Input Package Type Pin Count Logic Family Input Type Maximum Operating Supply Voltage Maximum High Level Output Current Maximum Propagation Delay Time @ Maximum CL Minimum Operating Supply Voltage Maximum Low Level Output Current
RS Stock No. 166-2390
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MM74HC00MX
Brand :onsemi
THB8.789
Each (On a Reel of 2500)
Units
NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
RS Stock No. 670-9731
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MM74HC00MX
Brand :onsemi
THB18.963
Each: (In a Pack of 10)
Units
NAND Surface Mount 4 2 No SOIC 14 HC - 6 V -5.2mA 15 ns @ 6 V, 18 ns @ 4.5 V, 90 ns @ 2 V 2 V 5.2mA
RS Stock No. 510-308
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74LVC1G00GW,125
Brand :Nexperia
THB8.853
Each: (In a Pack of 50)
Units
NAND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS Stock No. 166-1442
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74LVC1G00GW,125
Brand :Nexperia
THB1.817
Each (On a Reel of 3000)
Units
NAND Surface Mount 1 2 No TSSOP 5 LVC - 5.5 V -32mA - 1.65 V 32mA
RS Stock No. 756-3306
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC7SZ08FE(TE85L,F)
Brand :Toshiba
THB10.502
Each: (In a Pack of 10)
Units
AND Surface Mount 1 2 No SON 5 - CMOS 5.5 V +24mA 4.9ns 1.65 V -24mA
RS Stock No. 165-8350
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ULN2003V12S16-13
Brand :DiodesZetex
THB6.689
Each (On a Reel of 2500)
Units
- Surface Mount - - - SOIC 16 - CMOS 5 V - 140ns 3.3 V 140mA
RS Stock No. 921-0811
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ULN2003V12S16-13
Brand :DiodesZetex
THB14.826
Each: (In a Pack of 30)
Units
- Surface Mount - - - SOIC 16 - CMOS 5 V - 140ns 3.3 V 140mA
RS Stock No. 662-9676
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4093BM
THB20.824
Each: (In a Pack of 5)
Units
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 130 ns @ 15 V, 180 ns @ 10 V, 380 ns @ 5 V 3 V 4.2mA
RS Stock No. 756-2814
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC4001BF(EL,N,F)
Brand :Toshiba
THB22.522
Each: (In a Pack of 5)
Units
NOR Surface Mount 4 2 No SOP 14 4000 CMOS 18 V dc -4mA 200ns 3 V dc +4mA
RS Stock No. 922-2909
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4093BM
THB29.358
Each (In a Tube of 50)
Units
NAND Surface Mount 4 2 Yes SOIC 14 4000 Schmitt Trigger 18 V -4.2mA 130 ns @ 15 V, 180 ns @ 10 V, 380 ns @ 5 V 3 V 4.2mA
RS Stock No. 518-8616
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC14001BDG
Brand :onsemi
THB20.57
Each
Units
NOR Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 100 ns @ 10 V, 250 ns @ 5 V, 80 ns @ 15 V 3 V 4.2mA
RS Stock No. 770-5333
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74LVC1G08Z-7
Brand :DiodesZetex
THB11.151
Each (On a Tape of 50)
Units
AND Surface Mount 1 2 No SOT-553 5 LVC CMOS 5.5 V -32mA 7 ns @ 2.7 V 1.65 V 32mA
RS Stock No. 791-6072
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC14001BDR2G
Brand :onsemi
THB15.404
Each (On a Tape of 25)
Units
NOR Surface Mount 4 2 No SOIC 14 4000 CMOS 18 V -4.2mA 350ns 0.5 V 4.2mA
RS Stock No. 662-7550
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74AC08DR
THB12.485
Each: (In a Pack of 10)
Units
AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 7.5 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
RS Stock No. 162-9388
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC14001BDR2G
Brand :onsemi
THB5.376
Each (On a Reel of 2500)
Units
NOR Surface Mount 4 2 No SOIC 14 4000 CMOS 18 V -4.2mA 350ns 0.5 V 4.2mA
RS Stock No. 178-4790
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC14001BDG
Brand :onsemi
THB15.403
Each (In a Tube of 55)
Units
NOR Surface Mount 4 2 No SOIC 14 4000 - 18 V -4.2mA 100 ns @ 10 V, 250 ns @ 5 V, 80 ns @ 15 V 3 V 4.2mA
RS Stock No. 179-2125
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74AC08DR
THB9.20
Each (In a Tube of 50)
Units
AND Surface Mount 4 2 No SOIC 14 AC - 6 V -24mA 7.5 ns @ 5 V, 9.5 ns @ 3.3 V 2 V 24mA
RS Stock No. 169-7126
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74LVC1G08Z-7
Brand :DiodesZetex
THB3.014
Each (On a Reel of 4000)
Units
AND Surface Mount 1 2 No SOT-553 5 LVC CMOS 5.5 V -32mA 7 ns @ 2.7 V 1.65 V 32mA
RS Stock No. 761-4473
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MM74HC132MX
Brand :onsemi
THB18.532
Each (On a Tape of 25)
Units
NAND Surface Mount 4 2 No SOIC 14 HC CMOS 6 V 5.2mA 158ns 2 V 5.2mA
RS Stock No. 166-2762
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MM74HC132MX
Brand :onsemi
THB8.125
Each (On a Reel of 2500)
Units
NAND Surface Mount 4 2 No SOIC 14 HC CMOS 6 V 5.2mA 158ns 2 V 5.2mA